/Engine/Source/Editor/ViewportInteraction/Public/VIGizmoHandle.h
Creates handle meshcomponent and adds it to the Handles list
[UGizmoHandleMeshComponent](API\Editor\ViewportInteraction\UGizmoHandleMeshComponent) * CreateAndAddMeshHandle ( class [UStaticMesh](API\Runtime\Engine\Engine\UStaticMesh) * HandleMesh, const [FString](API\Runtime\Core\Containers\FString) & ComponentName, const [FTransformGizmoHandlePlacement](API\Editor\ViewportInteraction\FTransformGizmoHandlePlacement) & HandlePlacement )